commit 90bf0d236a939f07b1635ffee4ef4268181c904c
author John Reck <jreck@google.com> Wed Aug 14 10:37:42 2013 -0700
committer Brian Carlstrom <bdc@google.com> Tue Apr 15 13:48:00 2014 -0700
tree cb5ac0842bfeaf3f90c23a5441e30b46cab263af
parent b50c217251b086440efcdb273c22f86a06c80cba

Merge seek support from 1.2 to 1.6

(cherry picked from commit 92c8c3c9f6d5318f07cb76d934c20ba1592a5581)

Change-Id: I340deefa71ec480327344c9dabe4c1e93f03e59a

png.h

diff --git a/png.h b/png.h
index cf1a27c..e251007 100644
--- a/png.h
+++ b/png.h
@@ -883,6 +883,10 @@
 typedef PNG_CALLBACK(void, *png_write_status_ptr, (png_structp, png_uint_32,
     int));
 
+#ifdef PNG_INDEX_SUPPORTED
+typedef PNG_CALLBACK(void, *png_seek_ptr, (png_structp, png_uint_32));
+#endif
+
 #ifdef PNG_PROGRESSIVE_READ_SUPPORTED
 typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));
 typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));
@@ -1944,6 +1948,20 @@
 PNG_EXPORTA(99, void, png_data_freer, (png_const_structrp png_ptr,
     png_inforp info_ptr, int freer, png_uint_32 mask), PNG_DEPRECATED);
 
+#ifdef PNG_INDEX_SUPPORTED
+/* Build image index for partial image decoding. */
+PNG_EXPORT(300, void, png_build_index, (png_structp png_ptr));
+PNG_EXPORT(301, void, png_configure_decoder,
+    (png_structp png_ptr, int *row_offset, int pass));
+/* Set the data seek function with a user supplied one.
+ * REQUIRED by partial image decode.
+ */
+PNG_EXPORT(302, void, png_set_seek_fn, (png_structp png_ptr,
+   png_seek_ptr seek_data_fn));
+/* Update the decoder status to the given pass */
+PNG_EXPORT(303, void, png_set_interlaced_pass, (png_structp png_ptr, int pass));
+#endif
+
 /* Assignments for png_data_freer */
 #define PNG_DESTROY_WILL_FREE_DATA 1
 #define PNG_SET_WILL_FREE_DATA 1